FLAC Audio Player Brett Mravec with Isaac Jones Greg McCoy Danielle Miller Team 9.

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Presentation transcript:

FLAC Audio Player Brett Mravec with Isaac Jones Greg McCoy Danielle Miller Team 9

Overview Plays FLAC files to audio out LCD Display SD card storage Battery operated Battery recharge capabilities

Criticality Levels High – Potential for personal injury λ < Medium – System failure λ < Low – Component Failure λ < 10 -5

Components for Analysis DSP 3.3 V Regulator IC 5 V Boost IC Battery Charging IC

FMECA Failure No.Failure ModePossible Cause Failure EffectDetection Method Criticality A1 (Battery Charging IC) Output = 0VFailure of Charging IC Battery won’t charge ObservationLow A2 (Battery Charging IC) IC sourcing large current Short through charging IC Battery Damage Excessive Heat / Fire High

FMECA Failure No.Failure ModePossible Cause Failure EffectDetection Method Criticality B2 (DSP) DSP does not output correctly Chip failureSystem would not function ObservationMedium C3 (5V Boost IC) Output = 0VFailure of a component in boost circuit LCD and Audio would fail ObservationMedium D4 (3.3 V Regulator) Output = 0VFailure of a component in regulator circuit System would not function ObservationMedium

Questions?